package File;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;

public class Demo8 {
    public static void main(String[] args) throws IOException {
   /**     InputStream inputStream=null;
try{
    inputStream=new FileInputStream("./test.txt");
}finally {
    inputStream.close();
}
*/

try(InputStream inputStream=new FileInputStream("./test")){
    while(true){
      /*  int data=inputStream.read();
        if(data==-1)break;
        System.out.printf("%x",data);
    */
        byte[]data=new byte[1024];
        int n=inputStream.read(data);
        if(n==-1)break;
        for (int i = 0; i <data.length ; i++) {
            System.out.printf("%x",data[i]);
        }
   }
}
    }
}
